A default screen layout is available for each function showing all buttons on one screen or, alternatively, all the functions are also available on a range of scrollable screens where the buttons are large enough for all finger types - the output can be set to scroll either vertically (the default) or horizontally as preferred - a complete record of each calculation is stored in the calculation history, the result of which can be used in future calculations - a full range of settings allow easy customisation including the ability to switch between portrait (the default) and landscape modes - move to SD for 2